{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["GENE"], "input": "RESULTS : Patients in Group A had a higher incidence of posterolateral wall motion abnormalities ( p < 0 . 001 ) on radionuclide ventriculography , a larger infarct area ( as evidenced by higher peak creatine kinase levels ) ( p < 0 . 02 ) and a lower left ventricular ejection fraction ( LVEF ) at hospital discharge ( p < 0 . 008 ) than those in Group B ."}
{"GENE": ["creatine kinase"]}